| 摘要 |
PROBLEM TO BE SOLVED: To prevent the increase of a retrieval time even when data on which any index is not reflected is increased in a text buffer for registration of a database. SOLUTION: A database system registers data on which an index is not reflected in a text buffer 39 for registration. Then, when retrieving the text buffer 39 for registration, the database system creates an index 40 for registration buffer by using retrieval characters shown in the retrieval request. Afterwards, when accepting the retrieval request, the database system retrieves an index 63 of the database, and when there is not any pertinent data in the index 63, the database system retrieves the index 40 for a registration buffer, and retrieves the text buffer 39 for registration by using the index shown in the index 40 for a registration buffer. The database system reflects the index 40 for the registration buffer on the index 63 in a predetermined timing. COPYRIGHT: (C)2009,JPO&INPIT
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